SCHEME OF PREHISTORIC TlMES. 27
or nations descended from him. He had also " other sons and daughters " in the same sense. The Sethites and Cainites and the other tribes of Adam, as they spread themselves eastward, displaced and at length exterminated the Preadamites of Asia. They overran the peninsula of Hindustan and extended them-selves into Ceylon. Under the influences of climate, and other physical conditions, they diverged from the Adamic aspect, and became Dravidians. The northern or Mongolian (also called Turanian) stream of Adamites was more prolific, and more in-spired by the spirit of emigration. Continuing eastward till arrested by the Pacific, the stream divided. The southern branch . swarmed over the Malayan peninsula and islands, and dispossessed the Preadamites of many of the islands of Polynesia. The northern branch moved toward Behring's Straits. Here a portion of them passed over the isthmus which then connected Asia and America, and in the course of thousands of years extended to Greenland and Cape Horn. Another portion of the northern branch was reflected westward, and followed the northern slope of the continent into Europe, and overran all Europe.
. Meantime a great deluge occurred in western Asia. Whole populations were destroyed. The Adamites who had remained near the original seat of the family were swept out of existence. The vacated regions of western Asia were, for a time, occupied by the wandering Mongoloids. But the descendants of Noah crowded upon them. The Mongoloids, though numerous, were inferior. They passed through the isthmus of Suez, before the settlement of the Hamites in Egypt, and ranged along the south coast of the Mediterranean, crowding the aborigines into the desert. At the Straits of Gibraltar, they crossed over into Spain. The straits were then an isthmus. But they found another out-let. The fabled Atlantis, of which the tradition has been pre-served by Plato and Theopompus, has been discovered At least, we have found the remnants of it. It lay along the present bed of the Atlantic from the Bay of Biscay to the mouth of the Niger.. The Maderia islands and the Canaries are surviving vestiges of Atlantis. Its worn stump has been traced by the soundings of American and British explorers ; and the outlines of the obliterated continent have recently been mapped in a scientific pub-